os_solaris.hpp revision 9743:d6c6ee9d40b0 
1/*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#ifndef OS_SOLARIS_VM_OS_SOLARIS_HPP
26#define OS_SOLARIS_VM_OS_SOLARIS_HPP
27
28// Solaris_OS defines the interface to Solaris operating systems
29
30// see thr_setprio(3T) for the basis of these numbers
31#define MinimumPriority 0
32#define NormalPriority  64
33#define MaximumPriority 127
34
35// FX/60 is critical thread class/priority on T4
36#define FXCriticalPriority 60
37
38// Information about the protection of the page at address '0' on this os.
39static bool zero_page_read_protected() { return true; }
40
41class Solaris {
42  friend class os;
43
44 private:
45
46  // Support for "new" libthread APIs for getting & setting thread context (2.8)
47#define TRS_VALID       0
48#define TRS_NONVOLATILE 1
49#define TRS_LWPID       2
50#define TRS_INVALID     3
51
52  // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization
53  static int_fnP_mutex_tP _mutex_lock;
54  static int_fnP_mutex_tP _mutex_trylock;
55  static int_fnP_mutex_tP _mutex_unlock;
56  static int_fnP_mutex_tP_i_vP _mutex_init;
57  static int_fnP_mutex_tP _mutex_destroy;
58  static int _mutex_scope;
59
60  static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait;
61  static int_fnP_cond_tP_mutex_tP _cond_wait;
62  static int_fnP_cond_tP _cond_signal;
63  static int_fnP_cond_tP _cond_broadcast;
64  static int_fnP_cond_tP_i_vP _cond_init;
65  static int_fnP_cond_tP _cond_destroy;
66  static int _cond_scope;
67
68  typedef uintptr_t       lgrp_cookie_t;
69  typedef id_t            lgrp_id_t;
70  typedef int             lgrp_rsrc_t;
71  typedef enum lgrp_view {
72    LGRP_VIEW_CALLER,       // what's available to the caller
73    LGRP_VIEW_OS            // what's available to operating system
74  } lgrp_view_t;
75
76  typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n);
77
78  typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id);
79  typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view);
80  typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie);
81  typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie);
82  typedef int (*lgrp_children_func_t)(lgrp_cookie_t  cookie,  lgrp_id_t  parent,
83                                      lgrp_id_t *lgrp_array, uint_t lgrp_array_size);
84  typedef int (*lgrp_resources_func_t)(lgrp_cookie_t  cookie,  lgrp_id_t  lgrp,
85                                       lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
86                                       lgrp_rsrc_t type);
87  typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie);
88  typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie);
89  typedef int (*meminfo_func_t)(const uint64_t inaddr[],   int addr_count,
90                                const uint_t  info_req[],  int info_count,
91                                uint64_t  outdata[], uint_t validity[]);
92
93  static getisax_func_t _getisax;
94
95  static lgrp_home_func_t _lgrp_home;
96  static lgrp_init_func_t _lgrp_init;
97  static lgrp_fini_func_t _lgrp_fini;
98  static lgrp_root_func_t _lgrp_root;
99  static lgrp_children_func_t _lgrp_children;
100  static lgrp_resources_func_t _lgrp_resources;
101  static lgrp_nlgrps_func_t _lgrp_nlgrps;
102  static lgrp_cookie_stale_func_t _lgrp_cookie_stale;
103  static lgrp_cookie_t _lgrp_cookie;
104
105  static meminfo_func_t _meminfo;
106
107  // Large Page Support
108  static bool is_valid_page_size(size_t bytes);
109  static size_t page_size_for_alignment(size_t alignment);
110  static bool setup_large_pages(caddr_t start, size_t bytes, size_t align);
111
112  static void init_thread_fpu_state(void);
113
114  static void try_enable_extended_io();
115
116  static struct sigaction *(*get_signal_action)(int);
117  static struct sigaction *get_preinstalled_handler(int);
118  static int (*get_libjsig_version)();
119  static void save_preinstalled_handler(int, struct sigaction&);
120  static void check_signal_handler(int sig);
121  // For overridable signals
122  static int _SIGasync;                      // user-overridable ASYNC_SIGNAL
123  static void set_SIGasync(int newsig) { _SIGasync = newsig; }
124
125 public:
126  // Large Page Support--ISM.
127  static bool largepage_range(char* addr, size_t size);
128
129  static int SIGasync() { return _SIGasync; }
130  static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo
131
132  static bool valid_stack_address(Thread* thread, address sp);
133  static bool valid_ucontext(Thread* thread, const ucontext_t* valid, const ucontext_t* suspect);
134  static const ucontext_t* get_valid_uc_in_signal_handler(Thread* thread,
135                                                    const ucontext_t* uc);
136
137  static ExtendedPC  ucontext_get_ExtendedPC(const ucontext_t* uc);
138  static intptr_t*   ucontext_get_sp(const ucontext_t* uc);
139  // ucontext_get_fp() is only used by Solaris X86 (see note below)
140  static intptr_t*   ucontext_get_fp(const ucontext_t* uc);
141  static address    ucontext_get_pc(const ucontext_t* uc);
142  static void ucontext_set_pc(ucontext_t* uc, address pc);
143
144  // For Analyzer Forte AsyncGetCallTrace profiling support:
145  // Parameter ret_fp is only used by Solaris X86.
146  //
147  // We should have different declarations of this interface in
148  // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file
149  // provides extensions to the os class and not the Solaris class.
150  static ExtendedPC fetch_frame_from_ucontext(Thread* thread, const ucontext_t* uc,
151                                              intptr_t** ret_sp, intptr_t** ret_fp);
152
153  static bool get_frame_at_stack_banging_point(JavaThread* thread, ucontext_t* uc, frame* fr);
154
155  static void hotspot_sigmask(Thread* thread);
156
157  // SR_handler
158  static void SR_handler(Thread* thread, ucontext_t* uc);
159 protected:
160  // Solaris-specific interface goes here
161  static julong available_memory();
162  static julong physical_memory() { return _physical_memory; }
163  static julong _physical_memory;
164  static void initialize_system_info();
165  static int _dev_zero_fd;
166  static int get_dev_zero_fd() { return _dev_zero_fd; }
167  static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; }
168  static int commit_memory_impl(char* addr, size_t bytes, bool exec);
169  static int commit_memory_impl(char* addr, size_t bytes,
170                                size_t alignment_hint, bool exec);
171  static char* mmap_chunk(char *addr, size_t size, int flags, int prot);
172  static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed);
173  static bool mpss_sanity_check(bool warn, size_t * page_size);
174
175  // Workaround for 4352906. thr_stksegment sometimes returns
176  // a bad value for the primordial thread's stack base when
177  // it is called more than one time.
178  // Workaround is to cache the initial value to avoid further
179  // calls to thr_stksegment.
180  // It appears that someone (Hotspot?) is trashing the user's
181  // proc_t structure (note that this is a system struct).
182  static address _main_stack_base;
183
184  static void print_distro_info(outputStream* st);
185  static void print_libversion_info(outputStream* st);
186
187 public:
188  static void libthread_init();
189  static void synchronization_init();
190  static bool liblgrp_init();
191  // Load miscellaneous symbols.
192  static void misc_sym_init();
193  // This boolean allows users to forward their own non-matching signals
194  // to JVM_handle_solaris_signal, harmlessly.
195  static bool signal_handlers_are_installed;
196
197  static void signal_sets_init();
198  static void install_signal_handlers();
199  static void set_signal_handler(int sig, bool set_installed, bool oktochain);
200  static void init_signal_mem();
201  static bool is_sig_ignored(int sig);
202  static void set_our_sigflags(int, int);
203  static int get_our_sigflags(int);
204
205  // For signal-chaining
206  static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
207                                 // signal(), sigset() is loaded
208  static struct sigaction *get_chained_signal_action(int sig);
209  static bool chained_handler(int sig, siginfo_t *siginfo, void *context);
210
211  // Allows us to switch between lwp and thread -based synchronization
212  static int mutex_lock(mutex_t *mx)    { return _mutex_lock(mx); }
213  static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); }
214  static int mutex_unlock(mutex_t *mx)  { return _mutex_unlock(mx); }
215  static int mutex_init(mutex_t *mx)    { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); }
216  static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); }
217  static int mutex_scope()              { return _mutex_scope; }
218
219  static void set_mutex_lock(int_fnP_mutex_tP func)      { _mutex_lock = func; }
220  static void set_mutex_trylock(int_fnP_mutex_tP func)   { _mutex_trylock = func; }
221  static void set_mutex_unlock(int_fnP_mutex_tP func)    { _mutex_unlock = func; }
222  static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; }
223  static void set_mutex_destroy(int_fnP_mutex_tP func)   { _mutex_destroy = func; }
224  static void set_mutex_scope(int scope)                 { _mutex_scope = scope; }
225
226  static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) { return _cond_timedwait(cv, mx, abst); }
227  static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); }
228  static int cond_signal(cond_t *cv)            { return _cond_signal(cv); }
229  static int cond_broadcast(cond_t *cv)         { return _cond_broadcast(cv); }
230  static int cond_init(cond_t *cv)              { return _cond_init(cv, os::Solaris::cond_scope(), NULL); }
231  static int cond_destroy(cond_t *cv)           { return _cond_destroy(cv); }
232  static int cond_scope()                       { return _cond_scope; }
233
234  static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) { _cond_timedwait = func; }
235  static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; }
236  static void set_cond_signal(int_fnP_cond_tP func)        { _cond_signal = func; }
237  static void set_cond_broadcast(int_fnP_cond_tP func)     { _cond_broadcast = func; }
238  static void set_cond_init(int_fnP_cond_tP_i_vP func)     { _cond_init = func; }
239  static void set_cond_destroy(int_fnP_cond_tP func)       { _cond_destroy = func; }
240  static void set_cond_scope(int scope)                    { _cond_scope = scope; }
241
242  static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; }
243  static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; }
244  static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; }
245  static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; }
246  static void set_lgrp_children(lgrp_children_func_t func)   { _lgrp_children = func; }
247  static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; }
248  static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func)       { _lgrp_nlgrps = func; }
249  static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; }
250  static void set_lgrp_cookie(lgrp_cookie_t cookie)  { _lgrp_cookie = cookie; }
251
252  static id_t lgrp_home(idtype_t type, id_t id)      { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; }
253  static lgrp_cookie_t lgrp_init(lgrp_view_t view)   { return _lgrp_init != NULL ? _lgrp_init(view) : 0; }
254  static int lgrp_fini(lgrp_cookie_t cookie)         { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; }
255  static lgrp_id_t lgrp_root(lgrp_cookie_t cookie)   { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; }
256  static int lgrp_children(lgrp_cookie_t  cookie,  lgrp_id_t  parent,
257                           lgrp_id_t *lgrp_array, uint_t lgrp_array_size) {
258    return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1;
259  }
260  static int lgrp_resources(lgrp_cookie_t  cookie,  lgrp_id_t  lgrp,
261                            lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
262                            lgrp_rsrc_t type) {
263    return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1;
264  }
265
266  static int lgrp_nlgrps(lgrp_cookie_t cookie)       { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; }
267  static int lgrp_cookie_stale(lgrp_cookie_t cookie) {
268    return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1;
269  }
270  static lgrp_cookie_t lgrp_cookie()                 { return _lgrp_cookie; }
271
272  static bool supports_getisax()                     { return _getisax != NULL; }
273  static uint_t getisax(uint32_t* array, uint_t n);
274
275  static void set_meminfo(meminfo_func_t func)       { _meminfo = func; }
276  static int meminfo (const uint64_t inaddr[],   int addr_count,
277                      const uint_t  info_req[],  int info_count,
278                      uint64_t  outdata[], uint_t validity[]) {
279    return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count,
280                                       outdata, validity) : -1;
281  }
282
283  static sigset_t* unblocked_signals();
284  static sigset_t* vm_signals();
285  static sigset_t* allowdebug_blocked_signals();
286
287  // %%% Following should be promoted to os.hpp:
288  // Trace number of created threads
289  static          jint  _os_thread_limit;
290  static volatile jint  _os_thread_count;
291
292  // Minimum stack size a thread can be created with (allowing
293  // the VM to completely create the thread and enter user code)
294
295  static size_t min_stack_allowed;
296
297  // Stack overflow handling
298
299  static int max_register_window_saves_before_flushing();
300
301  // Stack repair handling
302
303  // none present
304
305};
306
307class PlatformEvent : public CHeapObj<mtInternal> {
308 private:
309  double CachePad[4];   // increase odds that _mutex is sole occupant of cache line
310  volatile int _Event;
311  int _nParked;
312  int _pipev[2];
313  mutex_t _mutex[1];
314  cond_t  _cond[1];
315  double PostPad[2];
316
317 protected:
318  // Defining a protected ctor effectively gives us an abstract base class.
319  // That is, a PlatformEvent can never be instantiated "naked" but only
320  // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent).
321  // TODO-FIXME: make dtor private
322  ~PlatformEvent() { guarantee(0, "invariant"); }
323  PlatformEvent() {
324    int status;
325    status = os::Solaris::cond_init(_cond);
326    assert_status(status == 0, status, "cond_init");
327    status = os::Solaris::mutex_init(_mutex);
328    assert_status(status == 0, status, "mutex_init");
329    _Event   = 0;
330    _nParked = 0;
331    _pipev[0] = _pipev[1] = -1;
332  }
333
334 public:
335  // Exercise caution using reset() and fired() -- they may require MEMBARs
336  void reset() { _Event = 0; }
337  int  fired() { return _Event; }
338  void park();
339  int  park(jlong millis);
340  void unpark();
341};
342
343class PlatformParker : public CHeapObj<mtInternal> {
344 protected:
345  mutex_t _mutex[1];
346  cond_t  _cond[1];
347
348 public:       // TODO-FIXME: make dtor private
349  ~PlatformParker() { guarantee(0, "invariant"); }
350
351 public:
352  PlatformParker() {
353    int status;
354    status = os::Solaris::cond_init(_cond);
355    assert_status(status == 0, status, "cond_init");
356    status = os::Solaris::mutex_init(_mutex);
357    assert_status(status == 0, status, "mutex_init");
358  }
359};
360
361#endif // OS_SOLARIS_VM_OS_SOLARIS_HPP
362